1. The University of Notre Dame Australia; School of Physiotherapy; 19 Mouat Street (PO Box 1225) Fremantle Western Australia Australia 6959
2. Anglia Ruskin University; Faculty of Health, Social Care and Education; East Road Campus Young Street Site Cambridge UK CB1 1PT
3. University of South Australia; School of Health Sciences; GPO Box 2471 Adelaide South Australia Australia 5001
4. Brunel University London; Health Economics Research Group, Institute of Environment, Health and Societies, Department of Clinical Sciences; Kingston Lane Uxbridge Middlesex UK UB8 3PH